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Finding the Fourth Proportional to 85,858.88, 118,542.78 and 53,642.54

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Solution

The fourth proportional to 85,858.88, 118,542.78 and 53,642.54 is: 74,062.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,858.88 : 118,542.78 = 53,642.54 : x
  2. Step 2: Convert to fraction form
    85,858.88/118,542.78 = 53,642.54/x
  3. Step 3: Cross multiply
    85,858.88x = 118,542.78 × 53,642.54
  4. Step 4: Simplify right side
    85,858.88x = 6,358,935,817.86
  5. Step 5: Solve for x
    x = 6,358,935,817.86/85,858.88
  6. Step 6: Final answer
    x = 74,062.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.